net/ipv4/tcp_input.c

4511

if (opcode == TCPOPT_MSS && opsize == TCPOLEN_MSS) {

net/ipv4/tcp_input.c

4565

if (opsize == TCPOLEN_MSS && th->syn && !estab) {

net/ipv4/tcp_output.c

674

(TCPOLEN_MSS << 16) |

net/netfilter/nf_synproxy_core.c

123

(TCPOLEN_MSS << 16) |

net/netfilter/nf_synproxy_core.c

64

if (opsize == TCPOLEN_MSS) {

net/netfilter/xt_TCPMSS.c

117

for (i = sizeof(struct tcphdr); i <= tcp_hdrlen - TCPOLEN_MSS; i += optlen(opt, i)) {

net/netfilter/xt_TCPMSS.c

118

if (opt[i] == TCPOPT_MSS && opt[i+1] == TCPOLEN_MSS) {

net/netfilter/xt_TCPMSS.c

154

if (skb_tailroom(skb) < TCPOLEN_MSS) {

net/netfilter/xt_TCPMSS.c

156

TCPOLEN_MSS - skb_tailroom(skb),

net/netfilter/xt_TCPMSS.c

162

skb_put(skb, TCPOLEN_MSS);

net/netfilter/xt_TCPMSS.c

177

memmove(opt + TCPOLEN_MSS, opt, len - sizeof(struct tcphdr));

net/netfilter/xt_TCPMSS.c

180

htons(len), htons(len + TCPOLEN_MSS), true);

net/netfilter/xt_TCPMSS.c

182

opt[1] = TCPOLEN_MSS;

net/netfilter/xt_TCPMSS.c

189

tcph->doff += TCPOLEN_MSS/4;

net/netfilter/xt_TCPMSS.c

192

return TCPOLEN_MSS;

net/netfilter/xt_tcpmss.c

55

&& (optlen - i) >= TCPOLEN_MSS

net/netfilter/xt_tcpmss.c

56

&& op[i+1] == TCPOLEN_MSS) {

tools/testing/selftests/bpf/progs/test_tcp_custom_syncookie.c

248

if (*opsize == TCPOLEN_MSS && ctx->tcp->syn && mss)

tools/testing/selftests/bpf/progs/test_tcp_custom_syncookie.c

370

*ctx->ptr32++ = bpf_htonl(TCPOPT_MSS << 24 | TCPOLEN_MSS << 16 |

tools/testing/selftests/bpf/progs/xdp_synproxy_kern.c

487

*buf++ = bpf_htonl((TCPOPT_MSS << 24) | (TCPOLEN_MSS << 16) | mss);